Modular courses have been implemented in the case university since 2007. These courses amount to 21-27 credits and have been modularized to encourage undergraduate students to take courses related to secondary specialties in other departments. The objectives of this study were to investigate undergraduate students' satisfaction with course modularization and compare their differences regarding satisfaction. A questionnaire survey was conducted in the case university. The self-developed questionnaire regarding satisfaction was distributed to the participants and 919 valid responses were obtained using stratified random sampling. The collected data were analyzed using descriptive statistics, t-test, and the analysis of variance (ANOVA). Seven conclusions were obtained: (1) Modular courses have greater attractiveness for students to take courses related to secondary specialties in other departments. (2) Students' overall satisfaction with course modularization was above average, and they were most satisfied with the reduction in selective costs. (3) Students in their first, second, and the fourth years had higher satisfaction than those in their third year. (4) Students in the college of management exhibited superior satisfaction than those in the college of humanities and social sciences. (5) Students who took courses provided by other departments were especially satisfied with selective costs and course modularization. (6) Students who took courses provided by other departments provided superior assessments for course modularization than those who did not. (7) In the Colleges of Science and Engineering, Humanities and Social Science, Indigenous Studies, and Education, students who took courses provided by other departments showed higher satisfaction with selective costs than those who did not. In addition, this study provides several suggestions for future research in various fields.